If the body’s own immune function is low, it is susceptible to invasion by external bacteria and viruses, leading to infections, inflammation and other more serious diseases in the body. It is important to eat more food to improve your immune system. First, you can drink drinks or foods rich in protein content such as milk to increase nutrition and meet the nutrient supply to improve immunity. If your immunity is too poor, you should eat more probiotics or sea cucumbers that can play a role in health care and have a good effect to improve your immunity. If your immunity is so low that you cannot take supplements to improve it, you should go to the hospital and take medication or other treatments to improve your immunity.